Christina Applegate flashed her sparkly diamond engagement ring as she arrived at LAX last night. The actress stayed covert as she chatted with a friend at baggage claim, but there's no missing her sparkling bling. Her fiance, musician Martyn LeNoble, popped the question on Valentine's Day, though the two didn't announce the big news even to friends until a week ago. Huge congratulations to the happy couple! Whether she's planning her big day around the corner or down the line, it's just in time for wedding season on the PopSugar Network — don't miss all our style coverage, tips, tricks, and advice!